I would like to know if there are any books which teach basics of the Latin rhetoric(the figures of speech in Latin, their uses in the literature, the characteristics of different styles and genres etc.). I have heard about the Traité de stylistique latine by Jules Marouzeau but can't find it here. Is there anything helpful that can be found on the web(public domain books scanned by Google, for example)?

I for my part can offer no helpful online link to what you're looking for but, loving primary sources over secondary, I say make sure you read Quintilian's Institutes of Oratory, if you haven't already.